How to use the graphviz.backend.FORMATS function in graphviz
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pypa / pipenv / pipenv / vendor / pipdeptree.py View on Github 
"""Output dependency graph as one of the supported GraphViz output formats.
:param dict tree: dependency graph
:param string output_format: output format
:returns: representation of tree in the specified output format
:rtype: str or binary representation depending on the output format
"""
try:
from graphviz import backend, Digraph
except ImportError:
print('graphviz is not available, but necessary for the output '
'option. Please install it.', file=sys.stderr)
sys.exit(1)
if output_format not in backend.FORMATS:
print('{0} is not a supported output format.'.format(output_format),
file=sys.stderr)
print('Supported formats are: {0}'.format(
', '.join(sorted(backend.FORMATS))), file=sys.stderr)
sys.exit(1)
graph = Digraph(format=output_format)
for package, deps in tree.items():
project_name = package.project_name
label = '{0}\n{1}'.format(project_name, package.version)
graph.node(project_name, label=label)
for dep in deps:
label = dep.version_spec
if not label:
label = 'any'
graph.edge(project_name, dep.project_name, label=label):returns: representation of tree in the specified output format
:rtype: str or binary representation depending on the output format
"""
try:
from graphviz import backend, Digraph
except ImportError:
print('graphviz is not available, but necessary for the output '
'option. Please install it.', file=sys.stderr)
sys.exit(1)
if output_format not in backend.FORMATS:
print('{0} is not a supported output format.'.format(output_format),
file=sys.stderr)
print('Supported formats are: {0}'.format(
', '.join(sorted(backend.FORMATS))), file=sys.stderr)
sys.exit(1)
graph = Digraph(format=output_format)
for package, deps in tree.items():
project_name = package.project_name
label = '{0}\n{1}'.format(project_name, package.version)
graph.node(project_name, label=label)
for dep in deps:
label = dep.version_spec
if not label:
label = 'any'
graph.edge(project_name, dep.project_name, label=label)
# Allow output of dot format, even if GraphViz isn't installed.
if output_format == 'dot':
return graph.source:returns: representation of tree in the specified output format
:rtype: str or binary representation depending on the output format
"""
try:
from graphviz import backend, Digraph
except ImportError:
print('graphviz is not available, but necessary for the output '
'option. Please install it.', file=sys.stderr)
sys.exit(1)
if output_format not in backend.FORMATS:
print('{0} is not a supported output format.'.format(output_format),
file=sys.stderr)
print('Supported formats are: {0}'.format(
', '.join(sorted(backend.FORMATS))), file=sys.stderr)
sys.exit(1)
graph = Digraph(format=output_format)
for package, deps in tree.items():
project_name = package.project_name
label = '{0}\n{1}'.format(project_name, package.version)
graph.node(project_name, label=label)
for dep in deps:
label = dep.version_spec
if not label:
label = 'any'
graph.edge(project_name, dep.project_name, label=label)
# Allow output of dot format, even if GraphViz isn't installed.
if output_format == 'dot':
return graph.source"""Output dependency graph as one of the supported GraphViz output formats.
:param dict tree: dependency graph
:param string output_format: output format
:returns: representation of tree in the specified output format
:rtype: str or binary representation depending on the output format
"""
try:
from graphviz import backend, Digraph
except ImportError:
print('graphviz is not available, but necessary for the output '
'option. Please install it.', file=sys.stderr)
sys.exit(1)
if output_format not in backend.FORMATS:
print('{0} is not a supported output format.'.format(output_format),
file=sys.stderr)
print('Supported formats are: {0}'.format(
', '.join(sorted(backend.FORMATS))), file=sys.stderr)
sys.exit(1)
graph = Digraph(format=output_format)
for package, deps in tree.items():
project_name = package.project_name
label = '{0}\n{1}'.format(project_name, package.version)
graph.node(project_name, label=label)
for dep in deps:
label = dep.version_spec
if not label:
label = 'any'
graph.edge(project_name, dep.project_name, label=label)def _get_graphviz_extension(path):
if path:
path_splitted = path.split('.')
if len(path_splitted) == 1:
raise ValueError('Path without graphviz extansion.')
graphviz_extension = path_splitted[-1]
if graphviz_extension not in graphviz.backend.FORMATS:
raise ValueError(
'"{}" not a valid graphviz extension format.'.format(graphviz_extension)
)
return '.'.join(path_splitted[:-1]), graphviz_extension
return None, None:returns: representation of tree in the specified output format
:rtype: str or binary representation depending on the output format
"""
try:
from graphviz import backend, Digraph
except ImportError:
print('graphviz is not available, but necessary for the output '
'option. Please install it.', file=sys.stderr)
sys.exit(1)
if output_format not in backend.FORMATS:
print('{0} is not a supported output format.'.format(output_format),
file=sys.stderr)
print('Supported formats are: {0}'.format(
', '.join(sorted(backend.FORMATS))), file=sys.stderr)
sys.exit(1)
graph = Digraph(format=output_format)
for package, deps in tree.items():
project_name = package.project_name
label = '{0}\n{1}'.format(project_name, package.version)
graph.node(project_name, label=label)
for dep in deps:
label = dep.version_spec
if not label:
label = 'any'
graph.edge(project_name, dep.project_name, label=label)
# Allow output of dot format, even if GraphViz isn't installed.
if output_format == 'dot':
return graph.source"""Output dependency graph as one of the supported GraphViz output formats.
:param dict tree: dependency graph
:param string output_format: output format
:returns: representation of tree in the specified output format
:rtype: str or binary representation depending on the output format
"""
try:
from graphviz import backend, Digraph
except ImportError:
print('graphviz is not available, but necessary for the output '
'option. Please install it.', file=sys.stderr)
sys.exit(1)
if output_format not in backend.FORMATS:
print('{0} is not a supported output format.'.format(output_format),
file=sys.stderr)
print('Supported formats are: {0}'.format(
', '.join(sorted(backend.FORMATS))), file=sys.stderr)
sys.exit(1)
graph = Digraph(format=output_format)
for package, deps in tree.items():
project_name = package.project_name
label = '{0}\n{1}'.format(project_name, package.version)
graph.node(project_name, label=label)
for dep in deps:
label = dep.version_spec
if not label:
label = 'any'
graph.edge(project_name, dep.project_name, label=label)def format(self, format):
format = format.lower()
if format not in backend.FORMATS:
raise ValueError('unknown format: %r' % format)
self._format = formatdef add_schema(group):
try:
from graphviz.files import FORMATS
except ImportError:
from graphviz.backend import FORMATS
group.add_argument('--schema-format',
default='png', choices=tuple(FORMATS))
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